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Eco-Friendly and Environmentally Sustainable Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (20 August 2022) | Viewed by 2395

Special Issue Editors


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Guest Editor
Russ College of Engineering and Technology, Ohio University, Athens, OH 45701, USA
Interests: microstructure sensitive nondestructive evaluation; micromechanics; environmentally sustainable materials; additive manufacturing; microstructure evolution
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Biomedical Engineering Program, Ohio University, Athens, OH 45701, USA
Interests: biomaterials; polymeric materials; stimuli-responsive materials

Special Issue Information

Dear Colleagues,

Engineered materials are consistently pushing the boundaries of use by enhancing properties. Often, this comes at the cost of environmental sustainability. Many processes produce toxic waste or generate single-use material systems that cannot be easily repurposed. This Special Issue focuses on the development of material systems that are environmentally friendly either through naturally sourcing base materials or through development of recycling methods. Emphasis in this Special Issue will be placed on the characterization of such materials for practical use in structural and bio applications, along with thermal and electrical applications.

Papers on strategies for sustainably sourcing materials from natural or waste sources and development of functional materials for a range of applications are encouraged.

Dr. Brian J. Wisner
Dr. Andrew C. Weems
Guest Editors

Manuscript Submission Information

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Keywords

  • sustainability
  • naturally sourced
  • environmentally friendly

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Published Papers (1 paper)

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Research

12 pages, 3763 KiB  
Article
Biodiesel Production Using Lithium Metasilicate Synthesized from Non-Conventional Sources
by Eduardo Coutino-Gonzalez, Mario Ávila-Gutiérrez, Arnold Hernández-Palomares, Lilian I. Olvera, Francisco J. Rodríguez-Valadez and Fabricio Espejel-Ayala
Materials 2022, 15(19), 6753; https://doi.org/10.3390/ma15196753 - 29 Sep 2022
Cited by 2 | Viewed by 1673
Abstract
A facile and versatile process to produce lithium metasilicate (Li2SiO3) from non-conventional silicon sources (two different sand sources from the central area of México) was developed. The synthesis protocol based on a solid-state reaction followed by a hydrothermal treatment [...] Read more.
A facile and versatile process to produce lithium metasilicate (Li2SiO3) from non-conventional silicon sources (two different sand sources from the central area of México) was developed. The synthesis protocol based on a solid-state reaction followed by a hydrothermal treatment resulted in highly pure lithium metasilicate, as corroborated by XRD, SEM-EDS, and XPS analysis. Furthermore, lithium metasilicate was used as a heterogeneous catalyst for biodiesel production from soybean oil, where conversion yields were compared according to the silicon source used (based on chemical purity, stability, and yield efficiency). The best performing metasilicate material displayed a maximum of 95.5% of biodiesel conversion under the following conditions: 180 min, 60 °C, 5% catalyst (wt./wt., catalyst-to-oil), and 18:1 (methanol:oil). This contribution opens up alternatives for the production of lithium metasilicate using non-conventional precursors and its use as an alternative catalyst in biodiesel production, displaying better chemical stability against humidity than conventional heterogeneous catalysts. Full article
(This article belongs to the Special Issue Eco-Friendly and Environmentally Sustainable Materials)
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